DOMTokenList: Rename add() and remove() with single string argument.

third_party/WebKit/Source/core/layout/LayoutBoxModelObjectTest.cpp

 // Copyright 2016 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #include "core/layout/LayoutBoxModelObject.h"
 
 #include "core/dom/DOMTokenList.h"
 #include "core/dom/DocumentLifecycle.h"
 #include "core/html/HTMLElement.h"
 #include "core/layout/ImageQualityController.h"
@@ skipping 294 matching lines @@
       ToLayoutBoxModelObject(GetLayoutObjectByElementId("sticky"));
   LayoutBoxModelObject* target =
       ToLayoutBoxModelObject(GetLayoutObjectByElementId("target"));
   EXPECT_TRUE(
       scrollable_area->GetStickyConstraintsMap().Contains(sticky->Layer()));
   EXPECT_EQ(25.f,
             GetScrollContainerRelativeStickyBoxRect(
                 scrollable_area->GetStickyConstraintsMap().at(sticky->Layer()))
                 .Location()
                 .X());
-  ToHTMLElement(target->GetNode())
-      ->classList()
-      .add("hide", ASSERT_NO_EXCEPTION);
+  ToHTMLElement(target->GetNode())->classList().Add("hide");
   GetDocument().View()->UpdateLifecycleToLayoutClean();
   // Layout should invalidate the sticky constraints of the sticky element and
   // mark it as needing a compositing inputs update.
   EXPECT_FALSE(
       scrollable_area->GetStickyConstraintsMap().Contains(sticky->Layer()));
   EXPECT_TRUE(sticky->Layer()->NeedsCompositingInputsUpdate());
 
   // After updating compositing inputs we should have the updated position.
   GetDocument().View()->UpdateAllLifecyclePhases();
   EXPECT_EQ(50.f,
@@ skipping 596 matching lines @@
 
   // TODO(smcgruer): Until http://crbug.com/686164 is fixed, we need to update
   // the constraints here before calculations will be correct.
   inner_sticky->UpdateStickyPositionConstraints();
 
   EXPECT_EQ(LayoutSize(0, 100), outer_sticky->StickyPositionOffset());
   EXPECT_EQ(LayoutSize(0, 25), inner_sticky->StickyPositionOffset());
 }
 
 }  // namespace blink